# Relationship history for MSHA mine 1507407

Current hierarchy: **Joby  Fields → Fieldmore Enterprises → No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Slate Branch Coal Company Inc → No 1; 1974-01-01 to 1976-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Slate Branch Coal Company Inc → No 1; 1974-01-01 to 1976-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Slate Branch Coal Company Inc → Slate Branch Coal Company Inc; 1974-01-01 to 1976-04-19; source msha-controller-operator-history
- **operator_operates_mine:** Taylor Brothers Coal Company Inc → No 1; 1976-04-20 to 1976-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Taylor Brothers Coal Company Inc → No 1; 1976-04-20 to 1976-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Brothers Coal Company Inc → Taylor Brothers Coal Company Inc; 1976-04-20 to 1976-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Whamco Coal Company Inc → No 1; 1976-07-01 to 1976-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Casey Nathan → No 1; 1976-07-01 to 1976-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Casey Nathan → Whamco Coal Company Inc; 1976-07-01 to 1976-08-22; source msha-controller-operator-history
- **operator_operates_mine:** V & M Coal Company → No 1; 1976-08-23 to 1984-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Mc Coy Chester L & Leroy Christian → No 1; 1976-08-23 to 1984-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Mc Coy Chester L & Leroy Christian → V & M Coal Company; 1976-08-23 to 1984-06-12; source msha-controller-operator-history
- **operator_operates_mine:** Fieldmore Enterprises → No 1; 1984-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joby  Fields → No 1; 1984-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joby  Fields → Fieldmore Enterprises; 1984-06-13 to current/open; source msha-controller-operator-history